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Facing growing cybersecurity threats, monitoring of critical networks for
intrusion and anomaly detection (as well as passive asset discovery) becomes
ever more important. At the same time, with the rise of apps and services,
critical infrastructure operators can benefit from remote condition monitoring,
management services and data analytics.
Both, network security monitoring and the use of apps and services require safe
access to critical networks. DCU provides a trustworthy one-way flow of data
from critical OT networks to open networks, while keeping critical infrastructure
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Traditionally, critical industrial control systems are protected either by a firewall or by an air-gap, meaning they are completely isolated from the remaining network. Both have significant shortcomings as an air-gap does not allow the real-time flow of information while firewalls are susceptible to misconfiguration and back doors. A DCU is a far better way to keep a critical network safe while granting limited access. It is a one-way transfer device that permits data to be sent from the critical network for monitoring or use by a remote user, without allowing a potential entry point or attack vector into the critical network.
Modes of operation
With its various modes of operation a DCU meets different requirements in terms of data flow and network setups.